Mega Man X3 is the third game in the Mega Man X series, and the last one to be released on the SNES.
In this collaborative work, Hetfield90, nrg_zam & GlitchMan speed through the game very rapidly, collecting all heart tanks, subtanks, Ride Armor modules, upgrades and finally the Golden Armor.
It is a 00:34.58 improvement over the previous run by Hetfield90, thanks to a number of new glitches, explained in the authors' comments.
See also the any% run, which doesn't collect the upgrades but also collects the Z-Saber.